US6312148B1 - Removal of gaseous phase from continuous mixing chamber for rubber compound - Google Patents

Removal of gaseous phase from continuous mixing chamber for rubber compound Download PDF

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Publication number
US6312148B1
US6312148B1 US09/281,137 US28113799A US6312148B1 US 6312148 B1 US6312148 B1 US 6312148B1 US 28113799 A US28113799 A US 28113799A US 6312148 B1 US6312148 B1 US 6312148B1
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United States
Prior art keywords
mixing chamber
gas
rotor
circulating
mixing
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Expired - Lifetime
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US09/281,137
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English (en)
Inventor
Michel Deal
Christian Van Meyel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manufacture Francaise des Pneumatiques Michelin SAS
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Sedepro SA
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Assigned to SEDEPRO SOCIETE ANONYME reassignment SEDEPRO SOCIETE ANONYME ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DEAL, MICHEL
Assigned to SEDEPRO SOCIETE ANONYME reassignment SEDEPRO SOCIETE ANONYME ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VAN MEYEL, CHRISTIAN
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Publication of US6312148B1 publication Critical patent/US6312148B1/en
Assigned to MANUFACTURE FRANCAISE DES PNEUMATIQUES MICHELIN reassignment MANUFACTURE FRANCAISE DES PNEUMATIQUES MICHELIN ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SEDEPRO
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/421—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw and additionally other mixing elements on the same shaft, e.g. paddles, discs, bearings, rotor blades of the Banbury type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/84—Venting or degassing ; Removing liquids, e.g. by evaporating components
    • B29B7/845—Venting, degassing or removing evaporated components in devices with rotary stirrers
    • B29B7/847—Removing of gaseous components before or after mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/54—Screws with additional forward-feeding elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/56—Screws having grooves or cavities other than the thread or the channel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/681—Barrels or cylinders for single screws

Definitions

  • This invention concerns the mixing of rubber.
  • it relates to the continuous preparation of rubber compounds containing silica as reinforcing agent.
  • U.S. Pat. No. 5,626,420 discloses a continuous mixing apparatus for preparing a rubber compound.
  • This apparatus has an elongated mixing chamber containing at least one rotor in rotation in a stator, an upstream end and a downstream end, between which the material progressively flows, one or more inlets through which said mixing chamber receives the constituents of the rubber compound and an outlet at the downstream end through which the rubber compound is discharged.
  • the continuous mixing apparatus has the advantage, notably, of making it possible to obtain rubber compounds in which the reinforcing agent—e.g., carbon black—is remarkably well dispersed.
  • Patent EP 0,501,227 showed that rubber compounds containing silica as reinforcing agent in very large proportions could have remarkable properties for use as a tire tread, on condition, notably, that the silica should have an excellent dispersion in the elastomeric matrix.
  • the invention concerns a continuous mixing method and apparatus making it possible to attain better results, particularly when rubber compounds containing silica are prepared.
  • the filling rate of that zone is equal to 1.
  • the volume of the zone of the mixing chamber considered is not totally occupied by the constituents to be mixed, it is then said that the filling rate is less than 1.
  • the continuous mixing process for preparing a rubber compound in an elongated mixing chamber defined by the volume between the radially inner surface of a stator and the radially outer surface of at least one rotor in rotation in said stator, comprises:
  • the circulation of that gas is intended to make possible the extraction from the mixing chamber of the products in gaseous phase likely to appear in the chamber on mixing.
  • This method makes it possible to obtain, notably, for rubber compounds containing silica as reinforcing agent, satisfactory properties.
  • the zone in which the stream of gas is circulated, the “circulation zone,” is, in particular, a zone where the filling rate of said constituents is less than one. That stream of gas is preferably circulated in a direction opposite the direction of flow of materials in the course of mixing.
  • the circulation of said gas also makes it possible to better control the thermal development of the rubber compound.
  • the invention also concerns a continuous mixing apparatus for preparing a rubber compound which has an elongated mixing chamber containing:
  • circulation zone means for circulating a gas in at least a portion of said chamber called circulation zone.
  • Said mixing chamber is characterized in that, in the circulation zone, the stator and/or rotor contain a groove.
  • the stator and/or rotor preferably have at least one continuous thread in the circulation zone, and the groove adjoins the back face of that continuous thread.
  • the groove can have a U or inclined V shape. That groove has the advantage of regulating the circulation of gas, as well as the stability of the flow of material in the mixing chamber.
  • the means for circulating the gas in the circulation zone preferably circulate that gas against the direction of flow of the material in the mixing chamber. That counterflow circulation increases the speed of the gas relative to the material and promotes good extraction of the products in gaseous phase.
  • the circulation zone is advantageously situated below the inlet or inlets of the constituents in the mixing chamber.
  • the shape of the rotor and/or stator surface is such that one encounters, above and below, a zone whose filling rate is equal to 1.
  • FIG. 1 is a view in elevation of a mixing apparatus according to the invention with portions cutaway;
  • FIG. 2 is a side view of a portion of the rotor in the circulation zone
  • FIG. 3 is an axial partial section of a portion of the rotor in the circulation zone.
  • the continuous mixing apparatus shown in FIG. 1 corresponds substantially to the apparatus described in U.S. Pat. No. 5,626,420, which is incorporated herein by way of reference.
  • the apparatus contains a mixing chamber 11 within which a rotor 2 turns.
  • the upstream end of the mixing chamber is identified by reference 12 and the downstream end by reference 13 .
  • the elastomers are introduced in the mixing chamber through a conduit 57 .
  • FIG. 1 The cutaway of FIG. 1 makes it possible to view the inside of the mixing chamber 11 .
  • the latter is formed by the space available between the rotor 2 and the stator 1 .
  • the precise shape of the rotor and stator (number, pitch and angle of the threads or other shapes) in the different zones makes it possible, notably, to regulate the filling rate to 1 or less in the different zones of the mixing chamber. Optimization of those shapes is rather empirical and requires many experimental tests.
  • the zones where the filling rate can amount to 1 are indicated in FIG. 1 .
  • the base elastomers are introduced at the upstream end 12 of the mixing chamber into propulsion zone P 1 .
  • the powdery constituents such as reinforcing fillers, silica and/or carbon black, are introduced through inlet 15 .
  • liquid constituents such as extender oils and possibly silica/elastomer bonding agents (silanes) are preferably introduced at the beginning of the first zone M 1 through inlet 16 .
  • the other constituents of the rubber compound such as antioxidants, plasticizers, sulfur and activators, are premixed in a vat with a stirrer in order to obtain a paste.
  • the paste is introduced through inlet 17 into the second propulsion zone P 2 between the two mixing zones M 1 and M 2 .
  • the different constituents are preferably introduced by means of positive displacement pumps.
  • the second mixing zone M 2 contains a gas inlet 70 and an outlet 71 for said gas, which define the gas circulation zone C.
  • the inlet is preferably situated at the downstream end of zone M 2 , so that the gas is circulated against the direction of flow of material in the mixing chamber 11 .
  • the gas used is ordinarily air.
  • the filling rate in the circulation zone C is advantageously less than 1. It seems that helps make possible a stable, regular and smooth circulation of the air. This filling rate of less than 1 is obtained, as described in U.S. Pat. No. 5,626,420, through experimental tests, by varying the shape of the rotor and/or stator in that zone, by varying the volume of the chamber, by varying the temperature set for the walls of the stator, etc.
  • the latter is situated between two propulsion zones P 2 and P 3 that bring about below each of them, as indicated in FIG. 1, the formation of zones of filling rates equal to 1, which encompass between them the zone C where the air circulates.
  • the circulation of air in circulation zone C can be obtained either by drawing up all of the gases present in the mixing chamber through outlet 71 , or by injecting the air under pressure through inlet 70 , connecting that inlet with a compressed air source by means of a pressure reducing valve.
  • the latter solution is more flexible and is therefore preferable.
  • FIG. 2 shows a variant embodiment of the mixing apparatus according to the invention, which contains a rotor portion 2 whose surface has a groove 21 making it possible to create an inner channel through which the stream of gas can circulate.
  • a continuous thread 20 is shown in FIG. 2, containing such a groove 21 beside its rear face 22 , taking into account the direction of rotation of the rotor 2 indicated in the figure.
  • the groove 21 is U-shaped. The arm of the U closest to the thread 20 extends radially inward along the rear face 22 of the thread 20 . The other arm is slightly divergent.
  • the surface of the straight section of the groove 21 is of the same order of magnitude as the surface of the straight section of the projection of to the thread 20 .
  • groove 21 it is preferable for that groove 21 to extend over practically the entire circulation zone.
  • Such a groove has the advantage of improving the stability of the rubber compound in the mixing chamber.
  • FIG. 3 shows another variant of a groove 33 .
  • the rotor portion 3 contains a thread 30 with a front face 31 and a back face 32 .
  • the groove 33 adjoins the back face 32 of the thread 30 .
  • Said groove 33 is in the shape of an inclined V. It contains a first wall 34 which extends radially inward along the back face 32 of the thread 30 and a second wall 35 which connects the bottom 36 of the V to the surface 37 of the rotor 3 .
  • the angle between the two sides of the V ranges between 50 and 80 degrees.
  • the bottom 36 of the V has a small radius of curvature.
  • the marked divergence of the two sides of the V facilitates the removal of any particle of the rubber compound which should enter the groove 33 .
  • the small radius of curvature 36 of the bottom of the V impedes clogging of the groove 33 .
  • the air intake flow and pressure is experimentally regulated in order to obtain a good extraction of the products in gaseous phase linked to the constituents of the rubber compound and/or to their mixing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
US09/281,137 1997-08-01 1999-03-29 Removal of gaseous phase from continuous mixing chamber for rubber compound Expired - Lifetime US6312148B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/FR1997/001444 WO1999006197A1 (fr) 1997-08-01 1997-08-01 Melangeur en continu de caoutchouc
PCT/FR1998/001689 WO1999006198A1 (fr) 1997-08-01 1998-07-30 Melangeur en continu de caoutchouc

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1998/001689 Continuation WO1999006198A1 (fr) 1997-08-01 1998-07-30 Melangeur en continu de caoutchouc

Publications (1)

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US6312148B1 true US6312148B1 (en) 2001-11-06

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US (1) US6312148B1 (de)
EP (1) EP0929388B1 (de)
JP (1) JP4224726B2 (de)
AU (2) AU3944797A (de)
BR (1) BR9806068A (de)
DE (1) DE69809530T2 (de)
ES (1) ES2188001T3 (de)
WO (2) WO1999006197A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020137838A1 (en) * 1999-12-21 2002-09-26 Norberto Silvi Compounding filled silicone compositions
US20020186612A1 (en) * 2001-04-25 2002-12-12 Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.) Kneading apparatus and method for kneading rubber-based composition using the same
US20040213075A1 (en) * 2001-02-19 2004-10-28 Pirelli Pneumatici S.P.A. Closed mixer working process with stroke control ram
US20040213077A1 (en) * 2003-04-23 2004-10-28 Robert Dray Plastic screw
US20110059198A1 (en) * 2007-07-03 2011-03-10 Mars Incorporated Extruder
US10307950B2 (en) * 2014-05-15 2019-06-04 South China University Of Technology Volume pulsed deformation plasticating and conveying method and device by eccentric rotor

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JP2002347022A (ja) * 2001-05-23 2002-12-04 Bridgestone Corp ゴム組成物の製造方法
CN106113303B (zh) * 2016-08-26 2019-04-23 青岛科技大学 一种四棱锯齿型动态变间隙密炼机转子
CN106079135B (zh) * 2016-08-26 2019-04-23 青岛科技大学 一种同步六棱锯齿型动态变间隙密炼机转子
CN109366784A (zh) * 2018-09-30 2019-02-22 淮阴工学院 一种循环保护气密炼机系统
CN109454767A (zh) * 2018-10-30 2019-03-12 淮阴工学院 一种具有均匀混料功能的轮胎密炼装置

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US3371379A (en) * 1965-01-02 1968-03-05 Reifenhauser K G Apparatus for degassing thermoplastic material in screw presses
US3633880A (en) * 1970-01-08 1972-01-11 Gen Electric Extrusion device
US3917507A (en) * 1971-02-22 1975-11-04 Welding Engineers Countercurrent combined liquid and vapor stripping in screw devolatilizer
GB1431978A (en) 1971-02-22 1976-04-14 Welding Engineers Process and apparatus for removing volatile components of materials
US3963558A (en) * 1974-12-09 1976-06-15 W Bar E, Incorporated Apparatus and method for producing solid polymeric material from a dilute polymer solution
US3985348A (en) * 1975-01-14 1976-10-12 W Bar E, Incorporated Apparatus and method for feeding a powdery material to a plasticized, pressurized polymer
US4063717A (en) * 1977-02-01 1977-12-20 E. I. Du Pont De Nemours And Company Multivented twin-screw extruder
US4065532A (en) * 1974-04-11 1977-12-27 Basf Aktiengesellschaft Process for the admixture of additives into plastics with simultaneous removal of volatile constituents
US4260264A (en) * 1979-05-21 1981-04-07 The Japan Steel Works Ltd. Biaxial vent extruder
US4902455A (en) * 1987-12-24 1990-02-20 Hermann Berstorff Maschinenbau Gmbh Method and extrusion apparatus for degassing thermoplastic plastics material melts
US5120559A (en) * 1991-10-03 1992-06-09 Cornell Research Foundation, Inc. Extrusion processing with supercritical fluids
US5198171A (en) * 1988-10-11 1993-03-30 Toshiba Silicone Co., Ltd. Process for continuously producing heat-vulcanizable silicone rubber compound
US5227425A (en) * 1991-02-25 1993-07-13 Compagnie Generale Des Etablissements Michelin-Michelin & Cie Copolymer rubber composition with silica filler, tires having a base of said composition and method of preparing same
US5332309A (en) 1992-04-23 1994-07-26 Edge-Sweets Company Reactive component mixing with metered dry filler
US5504140A (en) * 1994-09-30 1996-04-02 The Goodyear Tire & Rubber Company Tire with tread of elastomer composition
DE19516082A1 (de) * 1995-05-03 1996-11-07 Gerhard Prof Dipl Ing Vetter Gehäuse von feststoffördernden Schnecken mit Öffnungen
US5626420A (en) * 1992-12-07 1997-05-06 Sedepro Apparatus for the continuous mixing of rubber
US5718782A (en) * 1996-03-07 1998-02-17 The Goodyear Tire & Rubber Company Truck tire with cap/base construction tread
US5772807A (en) * 1996-09-16 1998-06-30 The Goodyear Tire & Rubber Company Truck tire with thread of rib/groove configuration
US5843249A (en) * 1996-03-07 1998-12-01 The Goodyear Tire & Rubber Company Truck tire with cap/base construction tread
US5969022A (en) * 1991-06-20 1999-10-19 Uniroyal Chemical Company, Inc. Automotive weather stripping
US6080809A (en) * 1997-07-30 2000-06-27 Bridgestone/Firestone, Inc. Kaolin clay in silica tread compounds technical field

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371379A (en) * 1965-01-02 1968-03-05 Reifenhauser K G Apparatus for degassing thermoplastic material in screw presses
US3633880A (en) * 1970-01-08 1972-01-11 Gen Electric Extrusion device
US3917507A (en) * 1971-02-22 1975-11-04 Welding Engineers Countercurrent combined liquid and vapor stripping in screw devolatilizer
GB1431978A (en) 1971-02-22 1976-04-14 Welding Engineers Process and apparatus for removing volatile components of materials
US4065532A (en) * 1974-04-11 1977-12-27 Basf Aktiengesellschaft Process for the admixture of additives into plastics with simultaneous removal of volatile constituents
US3963558A (en) * 1974-12-09 1976-06-15 W Bar E, Incorporated Apparatus and method for producing solid polymeric material from a dilute polymer solution
US3985348A (en) * 1975-01-14 1976-10-12 W Bar E, Incorporated Apparatus and method for feeding a powdery material to a plasticized, pressurized polymer
US4063717A (en) * 1977-02-01 1977-12-20 E. I. Du Pont De Nemours And Company Multivented twin-screw extruder
US4260264A (en) * 1979-05-21 1981-04-07 The Japan Steel Works Ltd. Biaxial vent extruder
US4902455A (en) * 1987-12-24 1990-02-20 Hermann Berstorff Maschinenbau Gmbh Method and extrusion apparatus for degassing thermoplastic plastics material melts
US5198171A (en) * 1988-10-11 1993-03-30 Toshiba Silicone Co., Ltd. Process for continuously producing heat-vulcanizable silicone rubber compound
US5227425A (en) * 1991-02-25 1993-07-13 Compagnie Generale Des Etablissements Michelin-Michelin & Cie Copolymer rubber composition with silica filler, tires having a base of said composition and method of preparing same
US5969022A (en) * 1991-06-20 1999-10-19 Uniroyal Chemical Company, Inc. Automotive weather stripping
US5120559A (en) * 1991-10-03 1992-06-09 Cornell Research Foundation, Inc. Extrusion processing with supercritical fluids
US5332309A (en) 1992-04-23 1994-07-26 Edge-Sweets Company Reactive component mixing with metered dry filler
US5626420A (en) * 1992-12-07 1997-05-06 Sedepro Apparatus for the continuous mixing of rubber
US5504140A (en) * 1994-09-30 1996-04-02 The Goodyear Tire & Rubber Company Tire with tread of elastomer composition
DE19516082A1 (de) * 1995-05-03 1996-11-07 Gerhard Prof Dipl Ing Vetter Gehäuse von feststoffördernden Schnecken mit Öffnungen
US5718782A (en) * 1996-03-07 1998-02-17 The Goodyear Tire & Rubber Company Truck tire with cap/base construction tread
US5843249A (en) * 1996-03-07 1998-12-01 The Goodyear Tire & Rubber Company Truck tire with cap/base construction tread
US5772807A (en) * 1996-09-16 1998-06-30 The Goodyear Tire & Rubber Company Truck tire with thread of rib/groove configuration
US6080809A (en) * 1997-07-30 2000-06-27 Bridgestone/Firestone, Inc. Kaolin clay in silica tread compounds technical field

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020137838A1 (en) * 1999-12-21 2002-09-26 Norberto Silvi Compounding filled silicone compositions
US20040213075A1 (en) * 2001-02-19 2004-10-28 Pirelli Pneumatici S.P.A. Closed mixer working process with stroke control ram
US6908221B2 (en) * 2001-02-19 2005-06-21 Pirelli Pneumatici S.P.A. Closed mixer working process with stroke-control ram
US20020186612A1 (en) * 2001-04-25 2002-12-12 Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.) Kneading apparatus and method for kneading rubber-based composition using the same
US20060034147A1 (en) * 2001-04-25 2006-02-16 Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.) Kneading apparatus and method for kneading rubber-based composition using the same
US7004616B2 (en) * 2001-04-25 2006-02-28 Kobe Steel, Ltd. Kneading apparatus and method for kneading rubber-based composition using the same
US8177412B2 (en) 2001-04-25 2012-05-15 Kobe Steel, Ltd. Kneading apparatus and method for kneading rubber-based composition using the same
US20040213077A1 (en) * 2003-04-23 2004-10-28 Robert Dray Plastic screw
US20110059198A1 (en) * 2007-07-03 2011-03-10 Mars Incorporated Extruder
US9167846B2 (en) * 2007-07-03 2015-10-27 Mars, Incorporated Extruder
US10307950B2 (en) * 2014-05-15 2019-06-04 South China University Of Technology Volume pulsed deformation plasticating and conveying method and device by eccentric rotor

Also Published As

Publication number Publication date
JP4224726B2 (ja) 2009-02-18
DE69809530D1 (de) 2003-01-02
WO1999006198A1 (fr) 1999-02-11
BR9806068A (pt) 1999-08-31
DE69809530T2 (de) 2003-08-21
JP2001501148A (ja) 2001-01-30
EP0929388A1 (de) 1999-07-21
EP0929388B1 (de) 2002-11-20
ES2188001T3 (es) 2003-06-16
WO1999006197A1 (fr) 1999-02-11
AU8984898A (en) 1999-02-22
AU3944797A (en) 1999-02-22

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